RT5006

® RT5006 Single Output LNB Power Supply Controller with I2C Interface General Description The RT5006 is a highly integrated voltage regulator and interface IC, specifically designed for supplying power and control signals from advanced satellite Set-Top Box (STB) modules to the Low Noise Block (LNB) down converter in the antenna dish or to the multi-switch box. The device consists of an independent current-mode Boost controller and a low dropout linear regulator and the circuitry required for 22kHz tone generation and integrates tone detection capability, to support full one-way DiSEqCTM communications. All the functions and the LNB output voltages (16 programmable levels) can be controlled via the I2C bus. The RT5006 has fault signal to serve as an interrupt for the processor when any condition turns off the LNB controller (over current, over temperature and under voltage lockout). The states of these flags to the faults can be thoroughly examined through the I2C registers. Features  Wide Input Supply Voltage Range : 8V to 16V  Output Current Up to 700mA  Output Current Limit of 800mA with 5ms Timer  LNB Voltages (16 Programmable Levels)  ±4.5% High Accuracy of LNB Voltage for 0mA to 500mA Current Output  Fault Latch for OTP, OCP, UVLO  Built-in 22kHz Tone Generator One-Way DiSEqCTM Communication  Four Methods of 22kHz Tone Generation, via I2C Data Bits and/or External Pin  Adjustable Rising/Falling Time via External Capacitor  2-Wire Serial I2C Compatible Inter...